Malicious PDF — malware analysis report

Static analysis result for SHA-256 3262fde4d9ef19c8…

MALICIOUS

PDF

93.5 KB
MD5: ce41163f2e587e8febc653964cdeda63 SHA-1: e8ba6957c80824d549c13ce6c565ed89918ea0a4 SHA-256: 3262fde4d9ef19c897b61867ed81f2e075eb8909609ef8ff56bf8639080e15bb
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript

The PDF utilizes XFA forms, a known vector for embedding malicious content. High-confidence heuristics and ClamAV detections confirm its malicious nature, indicating it likely exploits vulnerabilities to download and execute a secondary payload. The embedded script, though not fully detailed, is the primary mechanism for this execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000246.bin
39166f4981bf9e7d0df2483dcdebf48a5865ea89dc41f83923b072f98ec9bf55		 pdf-embedded-script PDF raw stream script payload at offset 0x246 94994 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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